doc: Update documentation

Signed-off-by: Huaqi Fang <[email protected]>

README.md

@@ -43,7 +43,7 @@ If you want to run linux on Nuclei Demo SoC, you will need UX600 or UX900 RISC-V
 - Status: Working
 - Build dependencies: `build-essential git autotools-dev make cmake texinfo bison minicom flex liblz4-tool
   libgmp-dev libmpfr-dev libmpc-dev gawk libz-dev libssl-dev device-tree-compiler libncursesw5-dev libncursesw5`
-- Get prebuilt openocd from [Nuclei Development Tools](https://nucleisys.com/download.php)
+- Get prebuilt openocd from [Nuclei Development Tools](https://nucleisys.com/download.php#tools)
 - Setup openocd and add it into **PATH**
 
 ## Build Instructions
@@ -59,7 +59,7 @@ sudo apt-get install build-essential git autotools-dev cmake texinfo bison minic
 
 ### Install Nuclei Tools
 
-Download prebuilt 64bit `openocd` tool from [Nuclei Development Tools](https://nucleisys.com/download.php),
+Download prebuilt 64bit `openocd` tool from [Nuclei Development Tools](https://nucleisys.com/download.php#tools),
 and extract it into your PC, and then setup **PATH** using this command:
 
 ~~~shell
@@ -162,7 +162,7 @@ Please modify the `Makefile` to your correct core configuration before build any
 ## Booting Linux on Nuclei xl-spike
 
 **Note**: `xl_spike` tool should be installed and added into **PATH** in advance.
-Contact with our sales via email [email protected] to get `xl-spike` tools.
+Contact with our sales via email **[email protected]** to get `xl-spike` tools.
 
 > This feature will be **deprecated** in future.
 
@@ -739,10 +739,6 @@ When your applications are placed into the sdcard correctly, then you can insert
 
 For example, if you have an application called `coremark`, then you can directly run it using `/mnt/coremark`.
 
-## Help
-
-You can run `make help` for quick usage of this Nuclei Linux SDK.
-
 ## Port to your target
 
 For our current development demo SoC, we used the following resources:
@@ -756,8 +752,9 @@ For our current development demo SoC, we used the following resources:
 * PLIC @ 0x8000000
 * QSPI @ 0x10034000, which connect to SDCard, SDCard will be used when boot from SDCard
 * QSPI @ 0x10014000, which connect to XIP SPIFlash 4M, memory mapped started at 0x20000000.
+
   SPIFlash is used to place freeloader, which contains opensbi, uboot, dtb, and optional kernel and rootfs
-  when flash-only boot is performed. Flash-only boot will required at least 8M flash.
+  when flash-only boot is performed. **Flash-only boot** will required at least 8M flash.
 
 To basically port this SDK to match your target, you need at least to change the following files:
 
@@ -887,7 +884,7 @@ This repo is based on opensource repo https://github.com/sifive/freedom-u-sdk/tr
 
   If you don't want to build the nuclei sdk, you can also download the boot images generated by [github action](https://github.com/Nuclei-Software/nuclei-linux-sdk/actions).
 
-  For example, for `dev_nuclei` branch, you can find the previous built artifacts in https://github.com/Nuclei-Software/nuclei-linux-sdk/actions/runs/358740696.
+  For example, for `dev_nuclei_next` branch, you can find the previous built artifacts in https://github.com/Nuclei-Software/nuclei-linux-sdk/actions/runs/667358598.
 
   Then you can extra the downloaded `bootimages_ux600.zip` and extract `freeloader/freeloader.elf` to your disk,
   such as `D:/freeloader.elf`.